ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Sat Mar 11, 2017 12:54 am

Jaysen wrote:
Fri Mar 10, 2017 8:52 pm
How big is the shop?
The shed is 33' long and 22' wide.

The boat is 6' wide, and I used about 11' of shed width to install the engine. Could do it in a 10' wide shed at a squeeze.


Completed R13 two part nesting rowboat. ST 21 under construction .... where seeking perfection is recognized as the enemy of the good.

Eric1
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by Eric1 » Sat Mar 11, 2017 3:54 am

I've really enjoyed watching this build come together. You are doing a great job and I'm learning some things along the way.

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Sat Mar 11, 2017 5:15 am

Eric1 wrote:
Sat Mar 11, 2017 3:54 am
I've really enjoyed watching this build come together...... and I'm learning some things along the way.
Just as I am learning from you and every other builder who posts on this site. What an amazing mutual support and respectful learning community this builders' forum is. What a privilege to participate! :D
Completed R13 two part nesting rowboat. ST 21 under construction .... where seeking perfection is recognized as the enemy of the good.

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gonandkarl
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by gonandkarl » Sat Mar 11, 2017 7:38 am

Hi,
What a clean engine test installation. You never have a speck of dust on your boat I really dont know how you do that. When reading of your involvement about oysters I got the idea of growing oyster mushrooms which I am doing now. So you see we dont only learn from your boat build which I always look up first when I sign into new posts but we all get inspired by the lots of thoughts expressed in the forum.
For me the bateau forum is a must like the daily newspaper in the morning with always good news how to do little tasks in boatbuilding and always commented by lots of people with their various views to any subject.
Hope to see your boat splashed soon.
Greetings from Karl
All pictures of Micro Petrel AD14 and FS13 :

http://gallery.bateau2.com/index.php?cat=87433

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cape man
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by cape man » Sat Mar 11, 2017 7:49 am

So my hat is off and my foot in my mouth. :oops:
The world always seems brighter when you've just made something that wasn't there before - Neil Gaiman

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Sat Mar 11, 2017 8:21 pm

Good hearing from you Karl, and Craig, it aint nothin but a thang. :lol:
Completed R13 two part nesting rowboat. ST 21 under construction .... where seeking perfection is recognized as the enemy of the good.

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Sun Mar 12, 2017 5:07 am

Making progress on the electric motor installation layout.

The motor sits within an engine box with the drive shaft protruding from its front. Drive pulleys connected by a belt sit on the electric motor shaft and on the main propeller shaft approximately 14” below.

The electric engine box sits on four flexible engine mounts, so as to reduce engine vibration being transmitted to the hull. The height of the motor on the mounts can be adjusted vertically to tension the belt.

Inspection hatches will be installed in the two openings of the locker sole shown in the picture below.

Image

Image
Completed R13 two part nesting rowboat. ST 21 under construction .... where seeking perfection is recognized as the enemy of the good.

Jaysen
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by Jaysen » Sun Mar 12, 2017 11:27 am

Given the torsional loads, did you consider a metal backing plate glues and bolted to the ply?

Was ply chosen for weight/ease?

Is forced air through bottom and port side?

Sorry for the questions. Trying to make sure I understand the set up.

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Mon Mar 13, 2017 4:19 am

The electric motor has an inbuilt fan drawing air through its forward side and expelling through its rear side. I'm mounting the motor in the engine box in a way that forced cool air entering the engine box has to pass through the motor. This is being done by building an obstructing baffle, parallel with the front a rear faces of the box, which the cylindrical motor case passes snugly through. The baffle will be where the case is joined, as seen in the first picture below.

Forced cool air from a duct running below the sole of the rear locker enters a cut out in the forward section of the sole of the engine box, and exists through a vent cut into the rear face of the box. The second picture below shows the cut out in the locker sole.

Marine ply and fibreglass were chosen for the motor box because they were at hand.

Image

Image

Image
Completed R13 two part nesting rowboat. ST 21 under construction .... where seeking perfection is recognized as the enemy of the good.

willg
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by willg » Mon Mar 13, 2017 8:15 am

Your build is impressive in every way. Really, every step has been so thought out, clean and well done. I always look forward to your updates.

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